CUDA-Enabled Gnuradio Error in cudaMemcpy()

GNU Radio
1

Hi

After some struggle I managed to build CUDA-Enabled GNURadio, without
IIR
filters ( they were giving me alot of build problems so I commented them
out
in Makefiles and others)

However, after I ran the test to see if it worked:

#time ./gr_benchmark10_test.py -c && time ./gr_benchmark10_test.py

The output contains:
gr_vmcircbuf_cuda::copy_buf_to_buf() error cudaMemcpy() returned 0x3 = 3
initialization error
gr_vmcircbuf_cuda::copy_buf_to_buf recreating buffer d_base=0xb6a0000
size=32768 *2

Is this right? The benchmark test still finishes and shows that with
CUDA
its slower, but is this error normal?

Thanks